Analyzing Technology Issues

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Analyzing Technology Issues
Computer Basics
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The Impact of Technology on Education

• Education
• Internet
• Distance Learning
• Computer-Based Learning
• Simulations

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The Impact of Technology on Science

• Science
• Artificial Intelligence
• Genetic Engineering
• Virtual Reality

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The Impact of Technology on Work

• Multinational Economy
• Electronic Commerce

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The Impact of Technology on Our Lives

• Clothes that fight odor and bacteria
• The flying car
• Voice recognition
• Space travel
• Smart shoes and smart seats
• Smart houses
• Electronic shopping

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Exploring Technology Careers

• Business and Office
• Administrative Assistant
• Desktop Publisher/Graphic Designer
• Network Support and Administration
• PC Support Specialist
• Manager of Information Systems
• Web-Based
• Web Developer
• Web Master

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Computer Crimes

• A criminal act committed through the use of a
  computer. It can also involve the theft of a
  computer and any equipment associated with the
  computer.

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Types of Computer Crimes

• Computer fraud
• Conduct that involves the manipulation of a
  computer or computer data in order to obtain
  money, property, or value dishonestly or to cause
  loss.
• Computer hacking
• Involves invading someone elses computer,
  usually for personal gain or just the
  satisfaction of invasion.

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Other Computer Crimes

• Theft of computer time
• An employee uses a companys computer for
  personal use such as running a small business,
  keeping records of an outside organization, or
  keeping personal records.
• Data diddling
• Changing data before it is entered into the
  computer or after is has been entered into the
  computer.

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Computer Viruses

• A virus is a program that has been written to
  cause corruption of data on a computer.

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Types of Computer Viruses

• Worm
• Makes many copies of itself, resulting in the
  consumption of system resources that slows down
  or actually halts tasks.
• Time bomb
• Virus that does not cause its damage until a
  certain date or until the system has been booted
  a certain number of times.
• Logic bomb
• Virus triggered by the appearance or
  disappearance of specified data.
• Trojan horse
• Virus that does something different from what it
  is expected to do.

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Privacy and Security Issues

• Any time you submit information on the Internet,
  it is possible for the information to be gathered
  by many persons and used for various situations
  including being sold. Information can be
  gathered from online sources such as schools,
  banks, hospitals, insurance companies, and many
  other sources.

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Security Measures

• Maintain and Enforce Security Measures such as
• Passwords
• Electronic identification cards
• Firewalls
• Antivirus software
• Selective hiring process

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Advantages and Uses of Telecommunications

• Telecommunication involves electronically
  transferring data.
• Distance learning
• Allows the user to take classes without being
  physically present.
• Teleconferencing
• Provides conferencing capabilities from several
  locations without leaving the office, reduces
  costs for time and travel.

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What is a browser?

• The software program that you use to retrieve
  documents from the World Wide Web (WWW) and to
  display them in a readable format.
• Examples
• Internet Explorer
• Netscape Communicator

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Title bar

• The bar on top of the window that contains the
  name of the document.

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Menu Bar

• A horizontal menu that appears on top of a
  window.
• Provides a selection of options related to
  the Web page.

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Tool bar

• Icons for single-click access to most commonly
  used menu commands.

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Address bar

• Contains the URL, or address, of the active Web
  page also where you type the location for the
  Web page you want to visit.

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Go button

• Connects you to address displayed in the Address
  bar. Document Window displays the active Web Page

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Status bar

• Located at the bottom of the browser shows the
  progress of Web page transactions.

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Access Indicator

• A small picture in the upper right corner of the
  browser when animated, it means your browser is
  accessing data from a remote computer.

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Scroll bars

• Vertical and horizontal scroll bars lets you
  scroll vertically and horizontally if the Web
  page is too long or too wide to fit within one
  screen.

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What is Email?

• Email, or electronic mail, is similar to regular
  mail. You have a message, an address, and a
  carrier that figures out how to get it from one
  location to another.
• Email is used to stay in touch with family and
  friends, conduct business, and send attachments
  such as text and image files.

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Advantages and Uses of Email

• Faster way to communicate and respond
• Quick and easy way to send messages
• Forward messages to other individuals
• Send messages to multiple individuals
• Include attachments such as pictures, audio
  files, and documents

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Email Terminology

• Inbox
• Outbox
• Sent Items
• Deleted Items
• Drafts
• New Message
• Send
• Address Book

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Electronic Mail Addresses

• The address consists of three parts
• The user name of the individual
• The _at_ symbol
• The users domain name
• Example rsmith_at_yahoo.com

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What is a search engine?

• A tool that lets you find Web pages that match a
  particular word or phrase.
• Examples of search engines
• Altavista
• Google
• HotBot
• InfoSeek
• Excite

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Search Engine Terminology

• Search expression
• Index
• Spiders or bots
• Meta tags
• Directory
• Keyword search
• Hyperlink

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Background of the Internet

• Early origin in 1960s
• Closely tied to a networking project started by a
  governmental division called the Advanced
  Research Projects Agency.
• Original name ARPANET
• Created so that scientists were able to share
  information on military and scientific research.

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Features of the Internet

• The World Wide Web
• Began in March 1989 when Tim Berners-Lee wrote a
  small computer program for his personal use.

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Web Protocols

• HTML
• Hypertext Markup Language
• A series of tags that are integrated into text
  documents and describes how the text should be
  formatted when a Web browser displays it on the
  screen.
• HTTP
• Hypertext Transfer Protocol
• Standard that defines how messages are formatted
  and transmitted.

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Chat Rooms

• Using the computer to create real-time
  communication between yourself and another user
  or a group of users.
• Internet Relay Chat (IRC)
• A text-based chat developed by Jarkko Oikarinen
  in 1988.
• One of the most widely used chat forums on the
  Internet today.

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Chat Options

• Web chat
• Incorporates graphics, audio and video
• Hosted by search engines such as Yahoo, Snap, and
  Excite.
• Proprietary chat
• Requires that you download and install software
  from a company.
• Examples are Microsoft Chat, AOL, and Prodigy.
• Buddy lists
• You specify your list of friends and even tell
  when they are online.
• Examples are ICQ and AOL Messenger

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Mailing Lists

• A group of people with a shared interest.
• Their email addresses are collected into a group,
  and this group is identified by a single name.
• When a message is sent to the group, everyone on
  the list receives that message.

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Newsgroups

• A discussion forum or a type of bulletin board.
• Each board is dedicated to discussion on a
  particular topic.
• USENET
• Worldwide network of computers that facilitates
  the transmission of messages among the news
  servers.

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Research on the Internet

• Two basic tools used to find information
• Search engines
• Used to search for keywords.
• Subject directories
• Used to find specialized topics.

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Types of Search Engines

• Keyword Search
• Uses keywords to perform search
• Multimedia Search Engines
• Used to find graphics, video clips, animation,
  and MP3 music files.
• Meta Search Engines
• Search several major search engines at one time.
• Subject Directories
• Organized by subject categories and displayed in
  a series of menus.

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Tools and Techniques

• Phrase Searching
• Search Engine Math
• Boolean Operators
• Wildcard Searching
• Title Searching

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Phrase Searching

• A phrase is entered using double quotation marks
  and only matches those that appear adjacent to
  each other and in the order in which you specify.
• Example baseball cards

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Search Engine Math

• Symbols used in formulas to filter out unwanted
  listings.
• Use the plus symbol () before words that must
  appear.
• Also known as an inclusion operator.
• Use the minus symbol (-) before words that you do
  not want to appear.
• Also known as an exclusion operator.

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Boolean Operators

• Boolean logic consists of three logical
  operators
• AND
• NOT
• OR

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Wildcard Searching

• The symbol, called an asterisk, is considered a
  wildcard character.
• Used if you dont know the spelling of a word
• Example NRyan to search for Nolan Ryan
• Used to search plurals or variations of words.

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Title Searching

• Searching the title of a web page.
• When a web page author creates a Web page, the
  Web page generally contains a HTML title.